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TIME AND COSTS OF MINE-TYPE TUNNELS

BAUKOSTEN UND BAUZEITEN BERGMAENNISCH ERSTELLTER TUNNEL

The excessive costs of building large road and railway tunnels have led to an objective costs and building time evaluation being carried out for twelve road and rail tunnels in Switzerland and nine road tunnels in Austria, all of which were built after 1963 and are over 800 m long. By comparing data for these tunnels together with different construction times and yearly labor times, a rule-of-thumb forecasting model can be established which should make it possible to avoid false predictions in future.